|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Seeing is Believing -- Understanding Environmental Degradation and Mechanical Response Using Advanced Characterization Techniques: An SMD Symposium in Honor of Ian M. Robertson
||NOW ON-DEMAND ONLY - Effects of Hydrogen on Deformation Evaluated with EBSD of Single Crystal Austenitic Stainless Steel
||Brian Kagay, Coleman Alleman, Brandon Talamini, Chris San Marchi
|On-Site Speaker (Planned)
The effects of internal hydrogen on deformation features in 316 austenitic stainless steel were evaluated through electron backscatter diffraction (EBSD) of plastically deformed single crystal tensile specimens. Single crystal specimens oriented with three different crystallographic directions parallel to the tensile axis were used so that the deformation mechanisms occurring for specific orientations and numbers of active slip planes could be evaluated. Specimens with and without internal hydrogen were incrementally strained in tension, and the evolution of the deformed microstructure was interrogated by EBSD. Specifically, the quantity of geometrically necessary dislocations, occurrence of twinning, and crystal rotation are correlated to the initial crystal orientation and stress-strain response. The experimentally observed tensile flow properties and deformation mechanisms are correlated with crystal plasticity simulations of a digital representation of each single crystal to develop insight into the influence of hydrogen on deformation modes and to advance the crystal plasticity simulations of polycrystalline materials.
||Environmental Effects, Iron and Steel, Characterization